Dad's Favorite Detroit-Style Roquefort Burgers

Details

Ingredients

• 1 pound lean ground beef
• ½ teaspoon Worcestershire sauce
• 1 teaspoon dried parsley
• salt and black pepper to taste
• 1 cup Roquefort or other blue cheese, crumbled
• 4 kaiser rolls, split and heated
• 4 slices onion, or to taste
• 4 lettuce leaves
• 4 slices tomato